About: Palaeozoic plankton revolution: Evidence from early gastropod ontogeny

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About: Palaeozoic plankton revolution: Evidence from early gastropod ontogeny Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A major macroevolutionary trend in gastropod larval shell morphology occurred throughout the middle and late Paleozoic. The majority of Ordovician and Silurian gastropods have openly coiled initial whorls; this morphology was gradually lost. Mesozoic gastropods have exclusively tightly coiled initial whorls. Most protoconchs were formed by planktonic larvae, and this is the first documentation of a supraspecific trend in Paleozoic invertebrate larvae. The replacement of weak-shelled plankton by stronger-shelled plankton was probably caused by predatory, selective forces. It coincides with other fundamental changes in plankton communities during the middle and late Paleozoic, including the decline of acritarchs and graptolites. Plankton communities suffered from crises that were probably caused by extrinsic forces. During plankton restructuring in the aftermath, predation could have become an increasingly important selective factor for gastropod larvae. A major macroevolutionary trend in gastropod larval shell morphology occurred throughout the middle and late Paleozoic. The majority of Ordovician and Silurian gastropods have openly coiled initial whorls; this morphology was gradually lost. Mesozoic gastropods have exclusively tightly coiled initial whorls. Most protoconchs were formed by planktonic larvae, and this is the first documentation of a supraspecific trend in Paleozoic invertebrate larvae. The replacement of weak-shelled plankton by stronger-shelled plankton was probably caused by predatory, selective forces. It coincides with other fundamental changes in plankton communities during the middle and late Paleozoic, including the decline of acritarchs and graptolites. Plankton communities suffered from crises that were probably caused by extrinsic forces. During plankton restructuring in the aftermath, predation could have become an increasingly important selective factor for gastropod larvae. (en)
Title	Palaeozoic plankton revolution: Evidence from early gastropod ontogeny Palaeozoic plankton revolution: Evidence from early gastropod ontogeny (en)
skos:prefLabel	Palaeozoic plankton revolution: Evidence from early gastropod ontogeny Palaeozoic plankton revolution: Evidence from early gastropod ontogeny (en)
skos:notation	RIV/00025798:_____/03:00000031!RIV/2004/GA0/N03004/N
http://linked.open.../vavai/riv/strany	829-831
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA205/01/0143)
http://linked.open...iv/cisloPeriodika	9
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Frýda, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Česká geologická služba
http://linked.open...dnocenehoVysledku	620240
http://linked.open...ai/riv/idVysledku	RIV/00025798:_____/03:00000031
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Gastropoda, macroevolution, Paleozoic larval shells, plankton predation (en)
http://linked.open.../riv/klicoveSlovo	Gastropoda Paleozoic larval shells plankton predation macroevolution
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[E35E486DB724]
http://linked.open...i/riv/nazevZdroje	Geology
http://linked.open...in/vavai/riv/obor	DB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Evolution, systematics and paleobiogeographic relationship of devonian gastropods from the Prague basin (Bohemia) and the Farewell terrane (Alaska)
http://linked.open...UplatneniVysledku	2003
http://linked.open...v/svazekPeriodika	31
http://linked.open...iv/tvurceVysledku	Frýda, Jiří
number of pages	3 (xsd:int)

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